Spears 1-1/2" PVC Swing Check Valve | S1520-15

All thermoplastic check valves shall be utility swing check or utility spring check type constructed form PVC type I, ASTM D 1784 cell classification 12454. All valves shall be maintenance free seal unit construction with EPDM seat and weighted disc. All spring check valves shall have stainless steel spring assisted operation. All valves shall have external flow arrow direction designation. All valves shall be certified by NSF international for use in potable water service. All valves shall be pressure rated to 150 psi for water @ 73°F in full flow (open) position and to 75 psi @ 73°F back pressure (closed), as manufactured by Spears® manufacturing company.